Layer 03, Subcutaneous fat, volume

Subcutis

The deep volumising layer that shapes the contours of the face.

Depth

Variable, organised into discrete fat compartments

The subcutis, or subcutaneous layer, sits beneath the dermis and is largely composed of fat organised into distinct compartments. These compartments are not a uniform blanket. They sit in defined positions across the cheeks, temples, around the mouth and along the jaw, and together they create much of the youthful contour of the face.

What it is

Specialised fat cells, adipocytes, grouped into superficial and deep compartments separated by connective tissue septa.

A protective and insulating layer that also cushions the structures beneath and acts as an energy reserve.

What it does

Shapes the contours of the face, including cheek projection, temple fullness and the soft transition along the jawline.

Cushions the deeper structures, including bone, ligaments and muscle.

Influences how light falls across the face, which contributes to a rested or fatigued appearance.

How it changes with age
  • Fat compartments may lose volume, shift downward and become less evenly distributed.
  • These changes are associated with flatter cheeks, hollow temples, more visible tear troughs and a less defined jawline.
  • Volume loss in one area is often accompanied by relative fullness in another, contributing to the overall reshaping of the face with age.
Categories of treatment that work at this layer
  • Volume replacement approaches placed within or beneath this layer, considered only after consultation.
  • Biostimulator categories that may support gradual structural change in this layer.
Educational content only. This is general information about facial anatomy and is not a recommendation for any specific procedure. Whether any treatment is appropriate for you is determined in a one-on-one medical consultation.

Discuss your skin in person.

Request a Consultation

General information only. Not medical advice. All cosmetic procedures carry risks. A consultation with a registered medical practitioner is required prior to any treatment.